I had supposed that all versions of Readline that have filename quoting hooks also have the rl_completion_suppress_quote variable. But it seems OpenBSD managed to find a version someplace that does not, so we'll have to expend a separate configure probe for that.
(Light testing suggests that this version also lacks the bugs that make it necessary to frob that variable. Hooray!)
c32704441d Add configure probe for rl_completion_suppress_quote.
config/programs.m4 | 20 +++++++++++++++++++-
configure | 39 +++++++++++++++++++++++++++++++++++++++
src/bin/psql/tab-complete.c | 7 ++++---
src/include/pg_config.h.in | 4 ++++
src/tools/msvc/Solution.pm | 1 +
5 files changed, 67 insertions(+), 4 deletions(-)